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Explore the different levels and cycles of consciousness, including sleep, dreaming, and the functions of our awareness. Understand the importance of circadian rhythms and the stages of sleep.
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Unit V- States of Consciousness Consciousness Sleeping Dreams
Consciousness • _____________- our awareness of the _________ world and of ourselves, including our own mental processes, _________, feelings, and perceptions. • ________ show ______ and _______ waves
Consciousness can take many forms, while other mental processes occur simultaneously outside our awareness How is Consciousness Related to Other Mental Processes?
What Consciousness Does for Us • Restricts our _________ • Attention is the state of focused __________ • Combines sensation with ________ and memory • Allows us to create a mental model of the world that we can __________
Levels ofConsciousness Present Awareness Conscious Just below awareness Subconscious No Conscious Processing Preconscious Nonconscious Nonconscious Past awareness No awareness Unconscious
Preconscious • ____________- level of consciousness that is _________ of awareness but contains feelings and ________ that can easily be brought to ___________ awareness. • What did you have for dinner last night?
Unconscious • _________- the level of consciousness that includes often ________ feelings, wishes, and thoughts not directly __________ to conscious awareness. • Well-learned tasks become __________: • Driving • Typing • When you meet people you _____________ react to their gender, age, and appearance
Nonconscious • _____________- the level of consciousness devoted to processes completely _____________ to conscious awareness. • _____________: blood flow, filtering of the blood by kidneys, secretions of hormones • Lower level processing of __________: detecting edges, estimating size and distance of objects, recognizing _________
Dual Processing • ________ processing refers to the _________ information on conscious and _________ levels at the same _______.
Consciousness changes in cycles that correspond to our biological rhythms and the patterns of stimulation in our environment What Cycles Occur in Everyday Consciousness?
Circadian Rhythms • __________________- daily patterns of change • Psychological patterns that repeat every __________ • Repeat every ______ hours in a place without normal night-day • Influence: • ___________ cycle • Hormone release • Body ______________ • Other important body functions • ___________ is the disruption and re-shifting of your circadian rhythms
Circadian Rhythms • __________________- • Controls _______________ clock • Regulating changes in blood pressure, body temp, pulse, blood sugar levels, hormonal levels, activity levels, sleep, and wakefulness over 24 hours • Contains the _______________ nucleus • SCN’s activity causes the brain’s pineal gland to _________ production of the sleep inducing hormone melatonin in the morning and ________ it at night.
Circadian Rhythms • ________________ (reticular activating system)- • Neural network in _____________ (medulla and pons) and midbrain essential to the ____________ of sleep, wakefulness, _____________, and attention.
States of Consciousness • Include: • Normal waking (consciousness) • __________ • Sleep • ____________ • Meditation • __________ states
What Cycles Occur in Everyday Consciousness? • __________- state with focus on inner, private realities, which can generate _________ ideas. • Urge to daydream peaks about every _____ minutes • Urge highest between ______ and 2:00 pm • Almost _______ of your waking hours • May provide _______ relief
What Cycles Occur in Everyday Consciousness? • _______- is a complex ____________ of states of consciousness, each with its own level of consciousness, ____________, responsiveness, and physiological _______. • The sleep cycle involves: • ___________ (NREM) sleep • Stage 1 • Stage 2 • Stage 3 • Stage 4 • ______ sleep
Sleep Stages • ___________ sleep: • About every _____ minutes, we pass trough a cycle of _______ distinct sleep stages.
Awake and Alert • During strong _______ engagement, the brain exhibits _________ and fast, irregular ______ waves (15-30 cps). • An awake person involved in a conversation shows ______ activity. Beta Waves – It’s BETA to be awake!
Twilight- Awake but Relaxed • When an individual closes his eyes but remains _______, his brain activity ______ down to a large amplitude and slow, regular _____ waves (9-14 cps). • A _______ person exhibits an _____brain activity.
Stage 1 Sleep • _____ light sleep- brain enters a _____ amplitude, slow, regular wave from called _____ waves (5-8 cps). • Gradual loss of __________ to outside • Drifting thoughts and images • The ____________ state • Sense of falling most common • A person who is ____________ shows _______ activity. Theta Waves
Stage 2 Sleep • Accounts for about ___ of sleep time • Lasts about ____ minutes • Clearly asleep, but _____ to awaken • EEG shows high-frequency ____________ and K-complexes Theta Waves
Stage 3 Sleep • _________ sleep stage • ____________, low-frequency _______ waves (1.5-4 cps) • Lasts only a _______ minutes
Stage 4 Sleep • ________ sleep stage • Very _______ to awaken • High-amplitude, low-frequency ______ waves (1.5-4 cps) • Stage 3 and 4 together last about ____ minutes • Sleep ______ and/or _______ tends to occur at the end of this stage
REM Sleep • _______ Eye Movement Sleep • Sleep stage where eyes dart about • About ______ dreaming • 5 to 6 times each night (about _____ of sleep time) • Also called _________ sleep because muscles are relaxed (_________) but other systems are active. • EEGs show ______ waves (15-40 cps) much like awake-aroused state.
90-Minute Cycles During Sleep • With each 90-minute cycle: • Stage 4 sleep __________ • Duration of REM sleep __________
Why Do We Sleep? • We spend ________ of our lives sleeping. • If an individual remains awake for several _____, they deteriorate in terms of _______ function, concentration, and ________.
Sleep Deprivation • ________ and subsequent death • Impaired concentration • Emotion ___________ • Depressed ________ system • Greater __________
Accidents • Frequency of accidents ________ with loss of sleep
REM Rebound • When you are sleep deprived you lose out on ______types of sleep, REM and _____(non-REM). Typically when you have a chance to fall asleep after sleep deprivation you have a tendency to get more _______sleep than you would normally get. • This is your body's way of trying to _______up on its REM sleep.
Sleep Theories • Sleep _______: Sleeping in the _______ when predators loomed about kept our ancestors out of harm’s way. • Sleep ________: Sleep helps restore and repair ______ tissue. • Sleep Helps __________: Sleep restores and rebuilds our fading ________. • Sleep and ________: During sleep, the pituitary gland releases _____ hormone. Older people release less of this hormone and sleep less.
Sleep Disorders • _________ • Difficulty falling asleep or ________asleep • Affects about ___million Americans • May be related to stress, ________, medication • Can also be caused by noise, __________, or trying to sleep in a new environment
Sleep Disorders • _________ and sleepwalking • Usually occurs during Stage ___ sleep • More common in _______ • Sleepwalking more common in _____ • Night ________ • Episodes of fright that occur during stages ______ of NREM sleep • Person may sit up or ______, but likely will not _______ the episode in the morning
Sleep Disorders • ______ • Person stops breathing momentarily during sleep • Affects about 10 to 12 million Americans • REM _______ Disorder • Body fails to _______ during REM sleep. • “Sleepwalk With Me” • Sleep _________ • Body fails to undo the paralysis briefly upon walking.
Sleep Apnea • Shaq Attacks Sleep Apnea
Sleep Disorders • _____________ • Suddenly falling asleep without ______during waking hours • Narcoleptics often experience loss of _________tone as well • May also drop into REM sleep immediately, causing _________ • Likely caused by a_____ nervous system defect • Narcoleptic dog video
Lucid Dreaming • Lucid Dreaming ASAP video
Dream Findings • ________Emotional Content: 8 out of 10 dreams have negative emotional content. • ________Dreams: People commonly dream about failure, being attacked, pursued, rejected, or struck with misfortune. • _________Dreams: Contrary to our thinking, sexual dreams are sparse. Sexual dreams in men are 1 in 10; and in women 1 in 30. • Dreams of __________:Women dream of men and women equally; men dream more about men than women.
Dream Theories • Activation Synthesis • Information Processing • Cognitive Theory • Psychodynamic Theory Dreams mean very little Dreams mean quite a bit.
Activation-Synthesis Theory- Hobson • Dreams result from random __________ of brain cells responsible for eye movement, muscle movement, balance, and vision. • The brain then _________ (combines) this activity with existing knowledge and memories as if the signals came from the environment. • How we __________ the random images and sensations is the dream’s _________.
Information Processing- Cartwright • Dreams help us _______ the days events and ______ our memories • Help sift, sort, understand, and fix a day’s experience in our memories • They may help us work out unsolved _________. • We go to bed with a problem, and when we wake up the problem is solved (or forgotten, which may be a solution in itself) • When we are under _____ or _______, we sleep longer, and the amount of time spent in REM _________. • Suggests that we are working on the things that are worrying us while we dream.
Information-Processing Theory- Cartwright • Evidence that dreams as reflections of current ________: • Reflect ongoing conscious ______________ of waking life: • Concerns over relationships, work, sex, or health • More likely to contain material related to a person’s current concerns than ________ would predict: • Students dream about _________ • Instructors dream about forgetting lecture notes • Males and females appear to dream about ________ issues now that lives and concerns of the two sexes have become similar: • _______ children, clothes, household objects • ______ weapons, violence, sex, achievement
Psychodynamic Theory- Freud • ________________ • Dreams provide a psychic safety _______ to discharge unacceptable feelings from the _____. • The superego creates symbolic _________ to mask the unacceptable thoughts. • _____ content- the remembered storyline of a dream • _________ content- the underlying ________ of a dream
Hypnosis • __________- • Induced state of altered awareness, characterized by heightened __________ and deep ________ • _______________- • Degree to which an individual is responsive to hypnotic suggestion • ____________ sway • Imaginative
Hypnosis as an Altered State • Experts ________ about whether hypnosis involves: • A ________ state of consciousness • Heightened _________ • _________ processes such as role playing • A ___________ state (Hilgard’s “hidden observer” view)
Practical Uses for Hypnosis • Hypnosis can have ________ uses for: • Researchers • Psychological __________ • ________ and dental treatment • Hypnotic __________- • Diminished _________ to pain while under hypnosis
Meditation • ____________- set of techniques used to focus ___________ away from thoughts and feelings in order to create _________, tranquility, and inner peace.